1. Is risk of indicated operation too great in the elderly?;Ochsner;Geriatrics,1967
2. Preoperative assessment of older adults;Thomas;J Am Geriatr Soc,1995
3. Perioperative care for the elderly patient;Beliveau;Med Clin North Am,2003
4. The outcome of hospitalization for acute illness in the elderly;Lamont;J Am Geriatr Soc,1983
5. Functional recovery after hip fracture;Jette;Arch Phys Med Rehabil,1987